Manufacturing radar-absorbing composite materials by using magnetic Co-doped zinc oxide particles synthesized by Sol-Gel

Abstract

An indicator of being a strong country in today's world is that they have powerful weapons. In this sector where science is used exceedingly, the “stealth” takes an important place. Radar-absorbing materials are used in stealth technology to disguise an object from radar detection, such that it can allow a plane to be perceived as a bird. In this study, Co-doped zinc oxide reinforced styrofoam sheet composites were manufactured as radar-absorbing materials. For this purpose, Co-doped zinc–ZnO particles were synthesized via the Sol-Gel method with doping concentrations of 0%, 3%, 6%, 9%, and 12%. They were embedded in a styrofoam matrix with different loading levels to see the concentration dependence. The as-prepared powders were characterized by using X-ray diffraction and Scanning Electron Microscope-Energy Dispersive Spectroscopy. Magnetic characterization of samples was carried out using a vibrating sample magnetometer. Finally, the radar-absorbing test was applied with a network analyzer to achieve the main purpose of this research. It was concluded that Co-doped zinc oxide reinforced composites have electromagnetic properties that indicate potential applications in the radar-absorbing area.

Progress in the Synthesis and Application of Transparent Conducting Film of AZO (ZnO:Al)

“…In addition, the excellent optoelectronic properties of AZO films make them widely used in other fields, such as liquid crystal displays [ 80 , 81 , 82 ], anti-static films [ 83 ], thermal mirrors [ 84 ], transparent surface heaters [ 85 , 86 ], and infrared stealth materials [ 87 , 88 , 89 ], radar shielding protection [ 90 ], glucose sensing [ 91 ], biosensors [ 92 ], antibacterial applications [ 93 ], etc. The AZO thin-film material is non-toxic, has a simple preparation process, doping that is easy to achieve, and cheap raw materials that are easy to obtain; therefore, it has great development potential.…”

Effect of Filler Concentration and Time Sonication of ZnO Composite for Radar Absorbing Material Applications

“…The lightweight, flexibility, fast and low-cost, and simple processing are also characteristic material needed for beneficial as RAM applications. Thus, the oxide-based dielectric loss materials including iron oxide (Fe3O4) [2][3][4], reduced graphene oxide (RGO) [5], titanium dioxide (TiO2) [6], Nickel Oxide (NiO) [7,8], Cobalt-doped [9,10], and zinc oxide (ZnO) [11] are good alternative to meet the requirement as RAM applications.…”